Caption: MODEL RELEASED. Chiropractor in her practice. She is sitting next to a model of the human spine. Chiropractic medicine is based on the theory that nearly all disorders can be traced to an incorrect allignment of bones. The chiropractor attempts a remedy by removing nerve interference through manual adjustment of the spinal column. Movement of spinal vertebrae may release pressure on a spinal nerve root and have a referred effect on the organ or tissue to which the nerve is connected.